GHSA-8PHR-637G-PXRG

Vulnerability from github – Published: 2023-11-17 21:51 – Updated: 2023-11-17 21:51
VLAI
Summary
LibreNMS Cross-site Scripting at Device groups Deletion feature
Details

Summary

XSS attacks occurs when application is not sanitising inputs properly and rendering the code from user input to browser which could allow an attacker to execute malicious javascript code.

PoC

  1. Login
  2. Create a device group in /device-groups
  3. Name it as "><img src=x onerror=alert(1);>
  4. save it
  5. Go to services and create a service template and add that device group into that and save it
  6. After that go back to device groups and delete that device, you will see XSS payload popup in message Screenshot 2023-11-08 at 9 15 56 PM

Vulnerable code:

https://github.com/librenms/librenms/blob/63eeeb71722237d1461a37bb6da99fda25e02c91/app/Http/Controllers/DeviceGroupController.php#L173C21-L173C21

Line 173 is not sanitizing device name properly Screenshot 2023-11-08 at 9 26 14 PM

Impact

Cross site scripting can lead to cookie stealing attacks

Severity
6.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "librenms/librenms"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "23.11.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-48295"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-11-17T21:51:24Z",
    "nvd_published_at": "2023-11-17T21:15:07Z",
    "severity": "MODERATE"
  },
  "details": "### Summary\nXSS attacks occurs when application is not sanitising inputs properly and rendering the code from user input to browser which could allow an attacker to execute malicious javascript code.\n\n### PoC\n1. Login\n2. Create a device group in /device-groups\n3. Name it as `\"\u003e\u003cimg src=x onerror=alert(1);\u003e`\n4. save it\n5. Go to services and create a service template and add that device group into that and save it\n6. After that go back to device groups and delete that device, you will see XSS payload popup in message\n\u003cimg width=\"1043\" alt=\"Screenshot 2023-11-08 at 9 15 56\u202fPM\" src=\"https://user-images.githubusercontent.com/31764504/281489434-9beaebd6-b9ce-4098-a8e0-d67b185062b5.png\"\u003e\n\n\n### Vulnerable code:\nhttps://github.com/librenms/librenms/blob/63eeeb71722237d1461a37bb6da99fda25e02c91/app/Http/Controllers/DeviceGroupController.php#L173C21-L173C21\n\nLine 173 is not sanitizing device name properly\n\u003cimg width=\"793\" alt=\"Screenshot 2023-11-08 at 9 26 14\u202fPM\" src=\"https://user-images.githubusercontent.com/31764504/281490570-5ae6e73a-37ce-4683-8bc8-81655abd8d09.png\"\u003e\n\n### Impact\nCross site scripting can lead to cookie stealing attacks",
  "id": "GHSA-8phr-637g-pxrg",
  "modified": "2023-11-17T21:51:24Z",
  "published": "2023-11-17T21:51:24Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/librenms/librenms/security/advisories/GHSA-8phr-637g-pxrg"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-48295"
    },
    {
      "type": "WEB",
      "url": "https://github.com/librenms/librenms/commit/faf66035ea1f4c1c4f34559b9d0ed40ee4a19f90"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/librenms/librenms"
    },
    {
      "type": "WEB",
      "url": "https://github.com/librenms/librenms/blob/63eeeb71722237d1461a37bb6da99fda25e02c91/app/Http/Controllers/DeviceGroupController.php#L173C21-L173C21"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "LibreNMS Cross-site Scripting at Device groups Deletion feature"
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.